After attempting the ESD tape switch numerous times, I noticed I was STILL having some issues with the digitizers every once in a while. I discovered that the ENTIRE digitizer assembly will short itself out if the edge comes in contact with the metal frame. I added some extra 3M tape around the entire frame to add a "buffer" zone to give just enough space to make sure no parts of the digitizer are touching the frame. Also you want to make sure the LCD is screwed down in all four corners without any part of it pushing up on the digitizer. This worked for me finally after a grueling 6 hours of attempting every fix in the book and studying the cause and effect of the digitizer coming in contact with the frame is certain spots.